Answer: When you create a document in Microsoft Publisher or any desktop publishing program, in order for others to open and view the file they would normally have to have the same program. If they don't, there are ways you can convert your creation to a format that others can use.
For other uses, see Epidemiology (disambiguation). Epidemiology is the study and analysis of the patterns, causes, and effects of health and disease conditions in defined populations. It is the cornerstone of public health, and shapes policy decisions and evidence-based practice by identifying risk factors for disease and targets for preventive healthcare.
What is an Epidemiologist? Epidemiology is the study of the distribution and causes of disease. It aims to solve or control health problems. Epidemiology integrates experiments, risk assessment, statistical analysis, surveys, and interviews to study disease patterns. Epidemiologists investigate patterns and causes of diseases and injuries that affect people. They try to reduce diseases and injuries through community education and policy. Environmental epidemiologists study diseases that are known or suspected to be caused by environmental factors.